Quartz’s Simone Foxman wrote about this on June 5, "The 15-millisecond head start that led to $28 million in trades": If you’re a high-frequency trader, a few milliseconds is a big deal." The piece quotes a Thomson Reuters statement to CNBC: "We have identified that there was a minor clock synchronization issue … causing this data to be released 15 milliseconds early." bit.ly/11b6WMx